package com.autumn.annotations.leetcode.one;

import java.util.concurrent.atomic.AtomicInteger;
import java.util.regex.Pattern;

/**
 * 项目名称：com.autumn.xa
 * 类 名 称：Interfa
 * 类 描 述：TODO
 * 创建时间：2021/8/18 7:32 下午
 * 创 建 人：yeachrom
 */
public interface Interfa {
    static final String PATTERN = "^\\d+$";
    int a = 0;

    String b = "";


    public void a1();
    public abstract void a2();

    void a3();

    static void a4() {
        System.out.println(a);
        System.out.println(b);
    }

    public static void main(String[] args) {
        if (!Pattern.matches(PATTERN, "0")) {
            System.out.println("非法");
        }

        AtomicInteger a = new AtomicInteger();
        a.incrementAndGet();
    }

}
